I read a lot of this item.
But I cann't find the sollution.
In a two days my server hangs. I seems to be a memory problem.
The used memory increases.

OES2 in cluster
In the cluster is a NSS volume.
and a Groupwise 7 system. MTA, GWIA.
And an other service is the POA.

Please help.
I need to reset the server to often.